You can use a AJAX timer control in asp.net pages like the below
Place the below in your
.aspx
page
1. You would need a ScriptManager
<asp:scriptmanager enablepartialrendering="true" id="ScriptManager1" runat="server"> </asp:scriptmanager>
2. Then a Timer control
<asp:timer id="Timer1" runat="server" interval="300000" enabled="True" >
</asp:timer>
the
Interval
specified is in Milliseconds